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MYCOLOGY > CUTANEOUS MYCOSES (DERMATOPHYTES) > Flashcards

CUTANEOUS MYCOSES (DERMATOPHYTES) Flashcards

1
Q

fungal agent of Tinea favosa/favus

A

Trichophyton schoenleinii

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2
Q

yellow crusty cup-shaped flakes in head

A

scutula

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3
Q

colony:

Irregularly heaped, smooth,
white to cream colony with
radiating grooves; reverse
white.

A

T. schoenleinii

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4
Q

Conidia commonly are not formed. The hyphae tend to become knobby and club-shaped at the terminal ends, with the
production of many short lateral
and terminal branches

A

T. schoenleinii

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5
Q

mycoses under Trichophyton mentagrophytes

A

Tinea capitis, Tinea corporis, Tinea pedis, Tinea unguium

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6
Q

Colonial types may be velvety
and fluffy or granular and flat.
Color is white or tan to pink.
Reverse side is white, rose, or
red-brown.

A

Trichophyton mentagrophytes

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7
Q

Numerous, small, globose,
and arranged in grape like structures

A

microconidia T. mentagrophytes

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8
Q

Rare, thin walled, smooth,
and cigar-shaped

A

Microconidia T. mentagrophytes

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9
Q

Urease positive; positive
hair-baiting test produces
wedge shapes in hair

A

T. mentagrophytes

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10
Q

Tinea capitis, Tinea corporis, tinea unguiuum

A

Microsporum gypseum

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11
Q

Flat, tan to brown or
cinnamon- brown, granular or
powdery colony. Reverse side
is rose-brown, red-brown, or
cinnamon.

A

Microsporum gypseum

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12
Q

sparse, clavate, smooth-walled

A

microconidia M. gypseum

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13
Q

Numerous, thick-walled,
cigar shaped multiseptate with
spiny surfaces and rounded tips

A

T. gypseum macroconidia

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14
Q

M. gypseum can grow where

A

rice grain

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15
Q

cigar shaped fungi

A

macroconidia T. mentagrophytes and M. gypseum

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16
Q

no.1 cause of fungal scalp infection

A

Trichophyton tonsurans

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17
Q

black dot ringworm

A

trichophyton tonsurans

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18
Q

endothrix hair involvement

A

trichophyton tonsurans

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19
Q

mycoses of trichophyton tonsurans

A

Tinea, capitis, Tinea corporis, tinea pedis, tinea unguim

20
Q

Flat, powdery, granular, and
cream, tan, yellow-rose, or
rust-colored colony. Colonies
become heaped or sunken
with folds. Reverse is yellow
to tan

A

trichophyton tonsuran

21
Q

Abundant tear-, club-, or
balloon- shaped

A

Trichophyton tonsurans microconidia

22
Q

rare smooth- walled,
cylindrical

A

T. tonsurans macroconidia

23
Q

vitamin requirement for T. tonsurans

A

thiamine

24
Q

Tinea capitis, tinea corporis, tinea
unguium

A

Trichophyton rubrum

25
Q

Fluffy or granular white to
pink colonies. Reverse side is
cherry red or wine red when
grown on cornmeal agar.

A

Trichophyton rubrum

26
Q

Tear-shaped borne laterally
from long strands of hyphae

A

T. rubrum microconidia

27
Q

birds on fence

A

T. rubrum microconidia

28
Q

pencil shaped

A

T. rubrum macroconidia

29
Q

Rarely hydrolyzes urea;
requires 7 days for observable reaction; negative hair- baiting test

A

T. rubrum

30
Q

white or yellow nail discoloration,
thickening of the nail

A

Onchomycosis

31
Q

mycoses of Epidermophyton floccosum

A
  • Onychomycosis
  • Tinea corporis
  • Tinea pedis
32
Q

White to tan colonies, which
become yellow, mustardyellow, or khaki-green with
age; flat, suede-like texture
with folded center.
Reverse side is yellow-brown
or dark orange with folds.

A

Epidermophyton floccosum

33
Q

club shaped

A

Epidermophyton floccosum macroconidia

34
Q

spatulate, beaver’s tail macroconidia with two to four
cells occurring singly or in clusters of three to four

A

Epidermophyton floccosum macroconidia

35
Q

gray patch ringworm

A

microsporum audoinii

36
Q

Ectothrix hair involvement
Tinea capitis, tinea corporis

A

Microsporum audoinii

37
Q

Cream, tan, buff, or light
brown, flat, velvety colony.
Reverse side is salmon pink or
orange-brown.

A

Microsporum audoinii

38
Q

spindle shaped

A

Microsporum audoinii macroconidia

39
Q

Tinea capitis, tinea corporis

A

Microsporum audoinii

40
Q

Microsporum audoinii in woods lamp

A

apple green fluorescence

41
Q

White to buff granular or
cottony surface, which
develops bright yellow
periphery. Reverse side is
lemon yellow or
yellow-orange.

A

Microsporum canis

42
Q

microsporum canis in woods lamp

A

green yellow fluoresence (

43
Q

Trichophyton agar No 1

A

basal

44
Q

Trichophyton agar No 2

A

inositol

45
Q

Trichophyton agar No 3

A

thiamine and inositol

46
Q

Trichophyton agar No 4

A

thiamine

MYCOLOGY (10 decks)

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